Water treatment fluorine removal agent suitable for micro-polluted raw water as well as preparation method and using method of water treatment fluorine removal agent

Abstract

The invention discloses a water treatment fluorine removal agent suitable for micro-polluted raw water and a preparation and using method thereof, the fluorine removal agent product which is a transparent solution in appearance is prepared from raw material components such as an aluminum salt, an iron salt, a silicon compound, a titanium salt, an ammonium compound, an amine compound, an alkalization substance, an oxidizing agent and water through the steps of dissolving, mixing, alkalization / polymerization, oxidation and curing. The titanium salt, the ammonium compound and the amide are introduced on the basis of a traditional fluorine removal agent to enhance the removal effect of fluoride in water, and meanwhile, the fluorine removal effect is further enhanced and residues of the agent are reduced by adopting alkalization / polymerization and oxidation methods in the preparation process; and the defluorination effect is good, the acidification degree of the treated effluent is low, the residual amount of the medicament is small, and the hardness of the effluent is not increased. Meanwhile, the water treatment fluorine removal agent is convenient to use, water treatment facilities do not need to be newly added, other flocculants or coagulant aids do not need to be added for the second time, and the effect of synergistically removing pollutants such as suspended particles, chemical oxygen demand, total phosphorus and metal mercury in water is achieved while efficient fluorine removal is achieved.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a water treatment defluoridation agent suitable for slightly polluted raw water and a preparation and use method thereof. Background technique [0002] With the rapid development of mining, chemical fertilizer, smelting, coal chemical industry, electrolytic aluminum and other industries in recent years, the discharge of fluorine-containing wastewater has aggravated the pollution of fluorine to the environment. In addition, due to the influence of its own geological environment in Northwest my country, the background concentration of fluoride in groundwater is relatively high, which belongs to the high-incidence area of ​​fluorine pollution, with the characteristics of wide pollution area, high pollution degree and difficult treatment. Fluorine pollution has a relatively large negative impact on people's health and ecological environment protection, and has bec...

AI Technical Summary

Problems solved by technology

However, pure aluminum salts have limited ability to capture fluoride, and often require a higher Al / F

[0005] In order to achieve the ideal defluorination effect, and high aluminum dosage will lead to a significant increase in the concentration of aluminum ions or the anions compounded with it

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